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Flora of China 22: 310–311. 2006. 68. ANISELYTRON Merrill, Philipp. J Flora of China 22: 310–311. 2006. 68. ANISELYTRON Merrill, Philipp. J. Sci. 5: 328. 1910. 沟稃草属 gou fu cao shu Lu Shenglian (卢生莲); Sylvia M. Phillips Aulacolepis Hackel (1907), not Ettingshausen (1893); Neoaulacolepis Rauschert. Perennials, tufted. Leaf blades linear to broadly linear, flat, flaccid; ligule membranous. Inflorescence an open panicle; branches whorled. Spikelets with 1 floret, laterally compressed, disarticulating above glumes, rachilla shortly extended beyond floret, gla- brous; glumes much shorter than floret, unequal, lower glume sometimes very small or vestigial, upper glume lanceolate, margins broadly hyaline, apex acuminate; callus of floret shortly and inconspicuously hairy, lateral hairs longest; lemma lanceolate in side view, keeled, leathery, scabrid, strongly 5-veined, acute or rarely mucronate; palea subequaling and almost enclosed by lemma, keels close together, prominent, scabrid, depressed between keels. Caryopsis ellipsoid. x = 7. Two species: N India to Indonesia and Japan; two species in China. The two species, and their infraspecific combinations, have usually been known in the past under the generic name Aulacolepis Hackel, but this is an illegitimate later homonym. The genus is usually placed in Aveneae close to, or included within, Calamagrostis, but molecular evidence shows it is more accurately placed in Poeae. 1a. Lower glume 0.5–2.5 mm, 1-veined; lateral pedicels variable in length, some filiform; leaf blades 5–15 mm wide ... 1. A. treutleri 1b. Lower glume up to 0.75 mm, veinless; lateral pedicels short, up to 1 mm; leaf blades 3–6 mm wide ................... 2. A. agrostoides 1. Aniselytron treutleri (Kuntze) Soják, Cas. Nar. Muz. Praze, range have sometimes been separated at specific or varietal rank. How- Rada Prir. 148: 202. 1980 [“1979”]. ever, variation is still little understood, so a broad species concept is followed here. 沟稃草 gou fu cao 2. Aniselytron agrostoides Merrill, Philipp. J. Sci. 5: 329. Milium treutleri Kuntze, Revis. Gen. Pl. 2: 780. 1891; Ani- 1910. selytron clemensiae (Hitchcock) Soják; A. japonica (Hackel) Bennet & Raizada; A. milioides (Honda) Bennet & Raizada; A. pseudopoa (Jansen) Soják; A. treutleri var. japonica (Hackel) N. X. Zhao; Aulacolepis clemensiae Hitchcock; A. japonica Hackel; A. milioides (Honda) Ohwi; A. pseudopoa (Jansen) Ohwi; A. treutleri (Kuntze) Hackel; A. treutleri subsp. japonica (Hackel) T. Koyama; A. treutleri var. japonica (Hackel) Ohwi; A. treutleri var. milioides (Honda) Ohwi; Calamagrostis japoni- ca (Hackel) Govaerts; C. treutleri (Kuntze) U. Shukla; Deyeuxia pseudopoa Jansen; D. treutleri (Kuntze) Stapf; Neo- aulacolepis clemensiae (Hitchcock) Rauschert; N. japonica (Hackel) Rauschert; N. treutleri (Kuntze) Rauschert; N. treut- leri var. japonica (Hackel) T. Osada; Poa milioides Honda. Culms solitary or loosely tufted, erect or geniculate and rooting at lower nodes, 45–110 cm tall, leafy. Leaf sheaths smooth or scabrid; leaf blades linear-lanceolate, 8–25 cm × 5– 15 mm, scabrid, apex acuminate; ligule 0.5–4 mm, truncate or rounded. Panicle open, ovate to pyramidal in outline, 10–25 cm; branches in distant whorls, slender, scabrid, bare in lower part, longest up to 13 cm; pedicels of lateral spikelets variable in length. Spikelets 2.5–5 mm, grayish green; glumes lanceo- late, lower glume 0.5–2.5 mm, 1-veined, upper glume 2–3.5 mm, 1–3-veined, keel scabrid, apex acute; callus hairs 0.1–0.8 mm; lemma apex acute to acuminate, sometimes scarious and incurved, rarely mucronate; palea keels prominent, scabrid be- coming ciliolate toward apex; rachilla 0.2–1.5 mm, glabrous. Anthers 0.7–1.5 mm. Fl. Jul. Moist shady often rocky places; 1300–2000 m. Fujian, Guangxi, Guizhou, Hubei, Sichuan, Taiwan, Yunnan [Bhutan, India (Darjeeling, Sikkim), Indonesia (Sumatra), Japan, Malaysia (Sabah), N Myanmar, N Vietnam]. Populations of this grass from different parts of its geographic Flora of China 22: 310–311. 2006. 小颖沟稃草 xiao ying gou fu cao Aniselytron agrostoides var. formosana (Ohwi) N. X. Zhao; A. formosana (Ohwi) L. Liu; Aulacolepis agrostoides (Merrill) Ohwi; A. agrostoides var. formosana Ohwi; Cala- magrostis aniselytron Govaerts. Culms slender, erect or geniculately ascending and rooting at lower nodes, 50–60 cm tall. Leaf sheaths smooth; leaf blades linear, 10–24 cm × 3–6 mm, scabrid, apex acuminate; ligule 0.3–1.5 mm, obtuse, erose or fimbriate. Panicle open with spreading branches, or somewhat contracted and narrower, 9– 22 cm; branches whorled, smooth or scaberulous, bare in lower part, longest up to 7.5 cm; pedicels of lateral spikelets fairly uniform in length, up to 1 mm. Spikelets 2.5–4 mm, green; lower glume vestigial or very small, 0.2–0.7 mm, veinless, upper glume lanceolate, very variable, 1–2.7 mm, 1–3-veined, smooth, apex slenderly acuminate; callus hairs 0.05–0.2 mm; lemma as long as spikelet, attenuate upward, margins scarious, apex scarious, acute to acuminate, incurved; palea keels promi- nent, scabrid; rachilla 0.3–0.8 mm, glabrous. Anthers 1.2–1.5 mm. Fl. Jul. Forests, grassy roadsides. Taiwan [Philippines]. Flora of China 22: 310–311. 2006. .
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